Abstract
Pyrochlore-structured yttrium titanate phosphors activated by trivalent europium ions (Y2Ti2O7(YT):Eu3+), with spherical morphology, were synthesized at different pH values by a solvothermal process. From the structural and morphological measurements, the annealing temperature had no effect on the spherical morphology of the YT:Eu3+ sample. The photoluminescence excitation and emission spectra were taken by activating the Eu3+ ions in the YT host lattice as functions of Eu3+ ion concentration and annealing temperature. The optimal doping concentration was found to be 4 mol%, exhibiting an excellent orange-red emission due to the highest intensity of the 5D0 → 7F1 transition. When the YT:Eu3+ phosphor was mixed with YAG:Ce3+ phosphor, a brilliant white light emission was achieved. (
Original language | English |
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Pages (from-to) | 224-227 |
Number of pages | 4 |
Journal | Physica Status Solidi - Rapid Research Letters |
Volume | 7 |
Issue number | 3 |
DOIs | |
State | Published - Mar 2013 |
Keywords
- Luminescence
- Solvothermal method
- Spherical morphology
- YTiO:Eu phosphors